Update aep/general/0004/aep.md.j2

Co-authored-by: Mike Kistler <[email protected]>

Author: toumorokoshi

aep/general/0004/aep.md.j2

@@ -5,7 +5,7 @@ create, retrieve, and manipulate. APIs are allowed to name their resource types
 as they see fit, and are only required to ensure uniqueness within that API.
 This means that it is possible (and often desirable) for different APIs to use
 the same type name. For example, a Memcache and Redis API would both want to
-use `Instance` as a type name.
+use `instance` as a type name.
 
 When mapping the relationships between APIs and their resources, however, it
 becomes important to have a single, globally-unique type name. Additionally,